My name is Ivan Udovin, and I would like to say, that the Codeforces Round #344 will be held on Thursday (March 3, 2016 at 19:35). This is our first round, but it doesn’t mean that problems will be boring and not interesting. The problemsetters of this round are me (wilcot) and Ilya Kheifets (iliya785). Thanks a lot to Alex Vistyazh (netman) and unknown person (he don’t want to be added in the announcement) for testing our round. Also I’d like to thank Fedor Korobeynikov (Fedosik) for his awesome idea for task E.

We thank Gleb Evstropov (GlebsHP) for his help in preparing the contest, Maria Belova (Delinur) for translating the statements into English, and, of course, Codeforces team and Mike Mirzayanov for unique Codeforces and Polygon platforms.

This round consists of five problems. Main heroes of this round: Blake — the owner of the "Blake Technologies" company, and Chris — an employee of this company, and others.